Cleaning device for sucker rods



I J.B.$HENK CLEANING DEVICE FOR SUCKER RODS March 4 1924-. 1,485,435

Filed April 17, 1.922

Patented Mar. 4, 1924.

umreo STATES JACOB B. SHENK, OF ELIDA, OHIO.

OLEANING DEVICE FOR SUCKER RODS.

Application filed April 17, 1922. Serial No. 554,886.

To all whom. it mag concern:

Be it known that I, JACOB B. SHENK, a citizen of the United States, and resident of Elida, in the county of Allen and State of Ohio, have invented certain new and useful Improvements in Cleaning Devices for Sucker Rods, of which the following is a specification.

My invention relates to improvements in cleaning devices for oil-well pumping apparatus, the same consisting more particularly in the provision of a relatively simple eflicient device for cleaning accumulations of parafiin and other substances from suckerrods as the latter are removed from well casings or tubings.

A purpose of my invention resides in the provision of a sucker-rod cleaning device which may quickly and easily be applied to and removed from well casings or tubings, and which includes means whereby the suction rod enga 'ng and cleaning elements thereof are maintained yieldably in contact with the sucker rod under substantially constant pressure, it being a further purpose of my invention to make said means adjustable in order that the pressure with which the cleaning elements engage the sucker rod may be varied.

It is my further purpose to provide a device of the character mentioned which is so constructed that paraffin and other substances cleaned thereby from a sucker rod may readily be removed and which itself may readily be disassembled for cleaning pur oses.

y inventive idea-is capable of embodiment in .various mechanical structures, one

of which is illustrated in the accompanying drawings, but it is to be understood that the structure shown is merely intended as a dis closure of the essential features and novel characteristics of my invention in a preferred form and that various modifications, changes and desirable additions may be made in and to the same within its scope as defined in the appended claims.

In the drawings wherein like characters of reference denote corresponding parts in the segarate views igure 1 is a side elevation of my im-- proved cleaning device showing the application of the same to a well tubing-- and sucker rod; and

Figure 2, is an elevation at right angles to Figure 1.

Referring now to the drawings in detail,

10 designates a base member provided witha central threaded opening whereby the same may be detachably engaged with the upper end of a well casing or tube 11 after the usual packing nut has been removed therefrom preparatory to extracting the sucker rod 12. This base member 10 preferably is of substantially rectangular and downwardly tapering shape and is adapted to support the remaining elements of the complete device, to which end it is provided upon its upper surface with upstanding apertured lugs 13 whereby the said remaining parts may be secured thereto.

A pair of duplicate housing members 14:

and 15 of somewhat elongated, hollow form, are pivoted at their lower ends to the lugs 13 on opposite sides of the center of base as at 16 and 17 respectively, so that they may swing towards and away from each other, and each of them, intermediate its ends, carries a roller 18 rotatably journaled on a pin 19. The rollers 18 are grooved as at 20 so that when the housing members are swung together the respective rollers contact in embracing relation with the sucker rod 12 extending upward from within the well tubing 11. Thus, as the sucker rod is removed, the rollers engage therewith in a frictionless manner and act to squeeze any accumulations of paraffin or other substances therefrom, the said accumulations being easily removable from between the housing members as is apparent.

In order to maintain the rollers yieldably in contact with the sucker rod, the respective pins 19 are extended beyond opposite sides of the housing members and each of them has connected thereto one end of a rod 21 which extends in the direction of and passes through an aperture-d lug 22 on the opposite housing member and at its free end is threaded to receive a nut 23. Encircllng each rod between its lug 22 and nut 23 is an expansion coil spring 24 which constantly reacts from the lug through the rod to move the housing members together and thereby maintain the rollers yieldably and constantly in contact with the sucker rod. By adjusting the nuts 23 on the rods 21 the force of the springs and consequently the pressure with which the rollers engage with the sucker rod may be varied. I have shown 'two rods 21 with associated parts disposed ing members as this results in balance and an even pressure on both rollers, but it is apparent that a single rod and spring would serve to force the housing members together so that one of the rods and'springs may be dispensed with if desired. Furthermore, due to the construction and manner of assembling the parts of my device the same may be quickly and easily disassembled for cleaning purposes and as readily reassembled for subsequent use.

From the foregoing description considered in connection with the accompanying drawing it is believed that the construction, operation and advantages of my improved sucker rod cleaning device will be clearly understood, and while I have herein shown and described one specific embodiment of my invention, I do not limit myself thereto except 'to such limitations as may be imported from the terms of the appended claims. 7

I claim 1. A sucker rod cleaning device including a base adapted for engagement with a well tube to dispose the device in operative relation with a sucker rod, a pair of housing members pivoted to the base for movement towards and away from each other, a rod secured at one end to each housing member and slidably extending through a portion of the other housing member, a nut threaded on the free end of each rod, an expansion coil spring encircling each rod between the nut thereon and a portion of the adjacent housing member whereby the housing members are urged together, and a roller carried by each housing member for engagement with the sucker rod to efi'ect removal of deposits therefrom as the same is withdrawn from the well tube.

2. A sucker rod cleaning device including memes a. base adapted for engagement with a well tube to dispose the device in operative relation with a sucker rod, :1 pair of housing members pivoted to the base for movement towards and away from each other, a device carried by each housing member adapted to engage a sucker rod to remove deposits therefrom as the sucker rod is removed from the tube, a rod secured to one housin member and slidably extending throug a portion of the other housing member, and a spring associated with and reacting. from said rod against the last mentioned housing member thereby to urge said housing members together and to maintain the devices carried thereby in engagement with the sucker rod.

3. A sucker rod cleaning device includin a. base adapted for engagement with a we tube to dispose the device in operative relation with a sucker rod, a pair of housing members pivoted to the base for movement towards and away from each other, a grooved roller carried by each housing member adapted to engage a sucker rod to remove deposits therefrom as the same is removed from the tube, a pin and an apertured lug extending from each housin member, a rod pivoted to the pin of eac housing member and extending through the lug of the other housing member, an abutment on each rod, and a spring associated with each rod and reacting from the abutment thereon against an associated lug aforementioned thereby to urge said housing members together and to maintain said grooved rollers in engagement with the sucker rod.

In testimony whereof I hereunto aflix my signature.

JACOB B. S'HENK. 

